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Recent problems solved by 'praseenakos@yahoo.com'

praseenakos@yahoo.com answered: 507 problems
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Rectangles/418791: give the domaina and range of the quadratic function The vertex is (-1,-7) and porabla opens up?
1 solutions

Answer 293013 by praseenakos@yahoo.com(507) About Me  on 2011-03-07 16:10:41 (Show Source):
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Domain is set of all real numbers...
Range is set of all real numbers greater than or equal to -7


Numeric_Fractions/418790: Factor each polynomial..how to easy way to factor
24m^np^2+36m^2n^2p
1 solutions

Answer 293011 by praseenakos@yahoo.com(507) About Me  on 2011-03-07 16:08:53 (Show Source):
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question is incomplete...you are missing number after 'm' in 24m^np^2
check ur question and re-post it...


Circles/418786: If a circle has a radius of 6inches what is it's approximate circumference.
1 solutions

Answer 293005 by praseenakos@yahoo.com(507) About Me  on 2011-03-07 15:58:19 (Show Source):
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circumference = +2+pi+r

circumference = +2%283.14%296
circumference = +37.68+ square inches


Rectangles/418780: the area of a rectangle is 56 square feet. its lenght is 10 feet longer than the width. find the lenght and width?
1 solutions

Answer 293003 by praseenakos@yahoo.com(507) About Me  on 2011-03-07 15:55:09 (Show Source):
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width = x feet
length = x + 10 feet

area = length x width

56 = x(x+18)
+56++=+x%5E2+%2B+10x
+x%5E2+%2B+10x+-+56+=+0
%28x%2B14%29%28x-4%29+=+0
==> x + 14 = 0 or x-4 = 0

==> x = -14 or x = 4

since length and width cannot be a negative number, you can ignore the negative value u got for x
==> width = 4 feet
so length = 4 + 10 = 14 feet


Polynomials-and-rational-expressions/418758: Factor.
x%5E2-8x-48
1 solutions

Answer 293001 by praseenakos@yahoo.com(507) About Me  on 2011-03-07 15:47:29 (Show Source):


Graphs/417986: y=-2/3x-12
1 solutions

Answer 292648 by praseenakos@yahoo.com(507) About Me  on 2011-03-06 09:26:07 (Show Source):


Quadratic_Equations/417960: The length of a rectangle is 7 inches more than three times the width. The perimeter is 86 inches. Find the length and width.
l = ? inches
w = ? inches
1 solutions

Answer 292646 by praseenakos@yahoo.com(507) About Me  on 2011-03-06 09:19:01 (Show Source):
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assume, width = x inches
==> length = 3x + 7
perimeter p 86 inches

==> +86+=+2%28+3x%2B7+%2B+x%29
==> +86%2F2+=+2%28+3x%2B7+%2B+x%29%2F2
==> +43+=++3x%2B7+%2B+x+
==> +43+=+4x%2B7
==> +43-7+=+4x%2B7-7
==> +36+=+4x+
==> +36%2F4+=+4x%2F4+
==> +9+=+x+
==> width = 9 inches
==> length = 3(9) + 7 = 34 inches


Circles/418022: what is the exact area of a circle witha a diameter of 25 inches

1 solutions

Answer 292644 by praseenakos@yahoo.com(507) About Me  on 2011-03-06 09:12:08 (Show Source):
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diameter = 25 inches
==> +radius+=++25%2F2+=+12.5+inches

==> +area+=+pi+%2A+r+%5E2
==> +area+=+3.14+%2A+%2812.5%29+%5E2
==> +area+=+pi+%2A+r+%5E2
==> +area+=++490.625square inches.


Numbers_Word_Problems/417864: The difference between two numbers is 10. The difference between their squares is 800. What are the numbers?
1 solutions

Answer 292557 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 21:05:32 (Show Source):
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let the numbers be x and y
+x-y+=+10
x%5E2+-+y%5E2+=+800
%28x%2By%29%28x-y%29+=+800
%28x%2By%2910+=+800
%28x%2By%2910%2F10=+800%2F10
+x%2By+=+80
also given, +x-y+=+10

==> +2x+=+90
==> +x+=+45+
==> +y+=+80-45+=+35





Circles/417870: If the ratio of a circle is 5mm What is the circumference of the circle? I have tried adding 5x4 for the ratii around the circle, but I dont know if it's right please help!
1 solutions

Answer 292555 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:59:16 (Show Source):
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is the radius given 5mm(u have typed ratio..juz wondering)
if radius is 5mm, circumference , +C+=+pi+%285%29%5E2

+C+=+pi+%2A+25+
+C+=+3.14+%2A+25+
+C+=+78.5+mm+


real-numbers/417948: solve for a
m=a+3b/2

1 solutions

Answer 292552 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:52:52 (Show Source):


real-numbers/417849: Decide whether or not the set is closed under addition.
{8} is Closed or not closed.

1 solutions

Answer 292550 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:49:39 (Show Source):
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Not closed...


percentage/417884: working with percentages as fractions. find the total. 23 is 3% of the total
1 solutions

Answer 292548 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:48:00 (Show Source):
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let x be the total...
3% of x = 23
==> +%283%2Ax%29%2F100+=+23
==> +3x+=+2300
==> +x=+766.66+


Rectangles/417943: the width of a rectangle is fixed at 21 cm. What lengths will make the perimeter
greater than 90cm?

1 solutions

Answer 292543 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:41:32 (Show Source):
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P = 2(length + width)
90+=+2%28+length+%2B+21%29

90%2F2+=+2%28+length+%2B+21%29%2F2
+45+=+length+%2B+21
+45+-21+=+length+%2B+21-21
+24+=+length+ which makes the perimeter 90
so to make the perimeter greater than 90, the length should be more than 24.


Graphs/417938: what is slope intercept

1 solutions

Answer 292541 by praseenakos@yahoo.com(507) About Me  on 2011-03-05 20:37:46 (Show Source):
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slope intercept form of a line is, y =mx + b where m is the slope and b is the y-intercept.
which means, the line crosses the y-axis at 'b'
slope describes its steepness, incline of the line


Radicals/417252: Please help me find the radical of 440, 540, and 640. Please i need your help ASAP.
1 solutions

Answer 292139 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:52:43 (Show Source):
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I guess your question is find the radical form of the given numbers,
If I understood the question wrongly, please re-post the question
+sqrt%28440%29 = +2+%2A+sqrt%28110%29

+sqrt%28540%29 = +6%2A+sqrt%2815%29

+sqrt%28640%29 = 6+%2A+sqrt%2810%29


Geometry_Word_Problems/417178: The length of a rectangule is 2 cm more than 5 times the width, the perimeter is 196 cm. find the width and length
1 solutions

Answer 292138 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:45:57 (Show Source):
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let the width = x

length = x + 2
Perimeter = 196
2(length+ width ) = 196
+2%28x%2B2%2Bx%29+=+196
+2%282x%2B2%29+=+196
+2%282x%2B2%29%2F2+=+196%2F2
++2x%2B2++=+98
++2x%2B2-2+=+98-2
++2x+++=+96
++2x%2F2++=+96%2F2
++x++=++48
width = 48
so length = 48+2 = 50


Triangles/417242: The sum of the measures of the three angles of a triangle is 180 degrees. Find the three angles if two angles are the same and the third is 60 degrees more than the other two.
1 solutions

Answer 292136 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:40:28 (Show Source):
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let the angles are, x, x, and (x+60)

==> x + x + x + 60 = 180

==> 3x + 60 = 180
==> 3x + 60 - 60 = 180 -60
==> 3x = 120
==> 3x%2F3+++=+120%2F3
==> x = 40

so the angles are 40,40, and 100


Circles/417232: If one side of a square is as long as the diameter of a circle, find the ratio of the perimeter of the square to the circumfrance of the circle.
1 solutions

Answer 292134 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:31:41 (Show Source):
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let x be the side of the square
Then, diameter of the circle = x

Perimeter if the square = 4x
Circumference of the circle = +pi%28x%29

Ratio of perimeter to circumference = +4x%2Fpi%28x%29=4%2Fpi


Reduction-of-unit-multipliers/417219: What shapes have base angles that are congruent .
1 solutions

Answer 292132 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:22:21 (Show Source):
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for isosceles triangles, base angles are congruent...


test/417196: uhm... i was wondering if someone could online tutor me.. for free.. thanks(:
1 solutions

Answer 292131 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:20:56 (Show Source):
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hahaha....I am not a professional tutor...but I can help you with some of your math lessons, depends on your grade level, that too FREE. I have a full time job but still I can help you if you post your questions here... :)


Travel_Word_Problems/417211: when it is 9 a.m. in los angeles,it is 12 p.m. in new york. if its 5 a.m. in new york, what time is it in los angeles?
1 solutions

Answer 292130 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:13:29 (Show Source):
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Time in los angeles will be 2 a.m.


Geometry_Word_Problems/417155: I really REALLY need help, this project is due tonight! I need to figure out what the length and width and all I have is the square feet.
Original length and width
50l x 36w = 1800sq ft
Width is 14 ft less than the length
New square feet
l x w = 1106
How do I find the new length and width?
1 solutions

Answer 292128 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 20:11:56 (Show Source):
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I am sure, whether its correct or not...coz i did not completely understand your question....
anyways i have given the solution from the information given by u....
pls check ur question and re-post it...
Solution...
length = x
width = x-14
area = 1106
==> X (x- 14) = 1106
==> +x%5E2+-+14+x+-+1106+=+0+
x+=+%28-%28-14%29+%2B-+sqrt%28+%28-14%29%5E2-4%2A1%2A%28-1106%29+%29%29%2F%282%2A1%29+
x+=+14+%2B-+sqrt%28+196%2B4424%29%2F2%29+

when I am solving, I am getting a decimal number
x = 40.985
and width = 40.985 - 14 = 26



Rectangles/417177: what is the area of a rectangle with the width of 2+m and the lenght of 5-2m

1 solutions

Answer 292122 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 19:55:49 (Show Source):
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area = length x width
==> +A+=+%285-2m%29+%2A+%282%2Bm%29+
==> +A+=+5%2A2+%2B+5%2Am+-2m%2A2+-2m+%2Am+
==> +A+=+10+%2B+5m+-+4m++-2m%5E2+
==> +A+=+10+%2B+m++-+2m%5E2+ this is the area..


Numbers_Word_Problems/417189: five less than three times a number is the same as eight times the number. Find the number

1 solutions

Answer 292115 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 19:50:07 (Show Source):
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five less than three times a number is the same as eight times the number.
Let the number = x
three times a number = 3x

five less than three times a number = 3x-5
eight times the number = 8x
five less than three times a number is
the same as eight times the number==> 3x-5 = 8x
==> +3x-5%2B+5++=+8x+%2B5+
==> 3x+++=+8x+%2B5+
==> 3x+-+8x++=+8x+%2B5+-+8x+
==> -5x+++=++5+
==> -5x%2F-5+++=++5%2F-5
==> +x+++=+-1








Percentage-and-ratio-word-problems/417191: The ratio of boys to girls in a class is 3:4.The class has 28 students.How many students in the class are girls?
1 solutions

Answer 292108 by praseenakos@yahoo.com(507) About Me  on 2011-03-03 19:44:11 (Show Source):
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Number of girls = %284%2F7%29%2A28

Number of girls = 112%2F7

Number of girls = 16


Quadratic_Equations/416568: Can you help me figure out the write values to use, when graphing a quadratic function using a table.
1 solutions

Answer 291865 by praseenakos@yahoo.com(507) About Me  on 2011-03-02 20:03:36 (Show Source):
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first you have to find the axis of symmetry using the formula, x+=+-b%2F2a

this will give you one x value.
No you have to pick two points on each side of this x value on the x-axis...
you can use these 5 values to make the table of values


Surface-area/416603: 5 m +3m +3m =
1 solutions

Answer 291864 by praseenakos@yahoo.com(507) About Me  on 2011-03-02 19:55:56 (Show Source):
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5 m +3m +3m = 11m


Circles/416599: what is the area of the largest circle that will fit insie a square with an area of 36 square centermeters?
1 solutions

Answer 291863 by praseenakos@yahoo.com(507) About Me  on 2011-03-02 19:54:33 (Show Source):
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area of the square is 36
==> one side would be sqrt%2836%29+=+6+
==> diameter of the circle = 6
==> radius of the circle = 3
==> area of the circle = +pi%28r%29%5E2
==> area of the circle = 3.14%283%29%5E2
==> area of the circle = 3.14%289%29
==> area of the circle = 28.26 square centimeters


Polynomials-and-rational-expressions/416582: How do i solve this trinomoal 2xsquared+7x+3
1 solutions

Answer 291860 by praseenakos@yahoo.com(507) About Me  on 2011-03-02 19:48:46 (Show Source):
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+2x%5E2+%2B7x+%2B3+
there are many methods to solve this problem...
I would use the method of factorization
I would find two numbers whose sum is 7 and product is 6
such two numbers are 1 and 6 (coz, 1+6 = 7 and 1*6 = 6)
Now i would split the middle term with these numbers...

+2x%5E2+%2B1x+%2B+6x+%2B3+=0
+%282x%5E2+%2B1x%29+%2B+%286x+%2B3%29+=0
+x%282x+%2B1%29+%2B+3%282x+%2B1%29+ = 0
+%282x+%2B1%29%28x+%2B+3%29 = 0

==> 2x + 1 = 0 or x + 3 = 0

==> 2x = -1 or x = -3
===> x+=+-1%2F2 or +x+=+-3+


Linear-equations/416589: Solve the system by the elimination method
4x-4y=2
16x+8y=14
1 solutions

Answer 291859 by praseenakos@yahoo.com(507) About Me  on 2011-03-02 19:41:26 (Show Source):
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4x-4y=2
16x+8y=14
2%284x-4y%29+=2%2A+2
==> +8x+-8y+=4
16x+%2B8y=14
Add these vertically...
==> +24x++=+18+
==> +24x%2F24++=+18%2F24+
==> +x++=+0.75+
Now plug in the value, x = 0,75 in the first equation...

4%280.75%29-4y=2

==> +3+-+4y=2
==> +3+-+4y+-3=2+-3
==> -4y=+-1+
==> -4y%2F-4=+-1%2F-4+
==> +y=+0.25+
x = 0.75
y= 0.25